Concept:Maize is a warm-season crop that needs warm and moist conditions for healthy growth.
Explanation:Maize production mainly requires high temperature, adequate rainfall, and relative humidity.
These conditions support germination, flowering, and grain filling.
High temperature helps the crop grow quickly and mature well.
Adequate rainfall supplies the water needed at critical growth stages.
Relative humidity reduces moisture loss and keeps the plant healthy.
Low temperature is not required for maize.
Cool conditions slow down growth and can reduce the yield.
Therefore, among the given options, low temperature is not essential for maize production.
Answer:B. low temperature